AS 402 then DL 3997 at Seattle
Omaha → Seattle → Portland (Oregon)
Timetable, Seattle time
10:18AS 402 from Omaha at the gate
20:58DL 3997 to Portland (Oregon) leaves the gate
10 h 40 apart on the timetable
Seattle’s board gives a departure time for only about 59% of its flights, so many days show no gate time.
The last days
AS 402 and DL 3997 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.